Create a Perspective enum to use instead of a bool is_server to improve

Create a Perspective enum to use instead of a bool is_server to improve
readability.

This also replaces the CryptoUtils::Perspective enun.

Merge internal change: 88006458

R=rch@chromium.org

Committed: https://crrev.com/6f48aa977c765198ef16a9524f00ff97e35500c5
Cr-Commit-Position: refs/heads/master@{#320694}

[ramant (doing other things), 2015-03-13 23:40:39]

On 2015/03/13 23:25:22, ramant wrote:

Hi Ryan,
  "git cl format net" changed lot of the code. Have merged these changes back
into internal source tree. Will land this CL separately because of the number of
changes.

thanks
raman

[Ryan Hamilton, 2015-03-15 21:10:36]

lgtm

[ramant (doing other things), 2015-03-15 23:37:37]

The CQ bit was checked by rtenneti@chromium.org

[commit-bot: I haz the power, 2015-03-15 23:37:47]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1009543004/1

[commit-bot: I haz the power, 2015-03-16 00:43:32]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-03-16 00:43:33]

Try jobs failed on following builders:
  linux_chromium_gn_dbg on tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[ramant (doing other things), 2015-03-16 00:49:43]

The CQ bit was checked by rtenneti@chromium.org

[ramant (doing other things), 2015-03-16 00:49:44]

The patchset sent to the CQ was uploaded after l-g-t-m from rch@chromium.org
Link to the patchset: https://codereview.chromium.org/1009543004/#ps20001
(title: "Added NET_EXPORT_PRIVATE to fix compiler error")

[commit-bot: I haz the power, 2015-03-16 00:49:47]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1009543004/20001

[commit-bot: I haz the power, 2015-03-16 02:18:58]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-03-16 02:19:48]

Patchset 2 (id:??) landed as
https://crrev.com/6f48aa977c765198ef16a9524f00ff97e35500c5
Cr-Commit-Position: refs/heads/master@{#320694}